Preheat oven to 375F. In a medium saucepan over medium heat, slowly cook and
stir the mushrooms, parsley and onion in 2 tablespoons butter until tender.
Drain and set aside. Separate the dough into 4 rectangles. Cut rectangles in
half, forming 8 squares, and arrange on a large baking sheet. Place 1
tablespoon mushroom mixture on each square. Top each square with 1 teaspoon
Parmesan cheese. Fold the squares into triangles. In a small saucepan, melt
remaining butter. Brush triangles with butter and sprinkle with sesame
seeds. Bake in the preheated oven 10 to 15 minutes, until golden brown.
Serve warm.